I would imagine the aluminium alloy is resistant to this precipitation heat treatment to a major degree, not daft these nips.
hi guys update on spark plugs one out and 1 snapped in half. so of to garage
Do not attempt to remove spark plugs while the engine is hot - not only may you burn yourself, you could damage the cylinder head.
Put a smear of copper grease on the threads of each new plug and screw them into their holes
Quote from: Major Rant on 13 January 2012, 05:18:15 pmQuoteThe ally isn't softer at 160 degress C than it is at 0 degrees C Its properties certainly can change at 160C. I would say its more likely to fracture but not because its soft, more probably because its become grainy.Google "preciptation heat treatment".I would imagine the aluminium alloy is resistant to this precipitation heat treatment to a major degree, not daft these nips. The coefficient of thermal expansion was really the important on here but Mr KAFA seems to think the alloy gets soft at operating temperatures. If he also knew about copper grease he would know, although thermally resistant to a point, it is a major no no once the evaporables evaporate and it becomes a congealed mass. You can look that up on the internet too.All you need to do to look clever is pretend to know more than the masses and in this case it appears to have worked.I'm newbieish on here but well known in other places, some say regrettably, and one of my saying has, for years, been bad advice is worse than no advice. Poor old gnashipoos cannot have any substatiation to a lot of his arguments as there is nothing to substantiate them as they are wrong, some of them anyways, some have a modicum of actual information and truth though.
QuoteThe ally isn't softer at 160 degress C than it is at 0 degrees C Its properties certainly can change at 160C. I would say its more likely to fracture but not because its soft, more probably because its become grainy.Google "preciptation heat treatment".
The ally isn't softer at 160 degress C than it is at 0 degrees C
BikersOracle, i remember some of your posts well in the ER5 & 6 Forum
Oh dear oh dear someone been a little rattled!
Mr Lumpy's comparisons of exhaust header nuts/studs and drain plugs to support his argument of not removing plugs on aluminium engines when hot is not apples for apples and it really clutching at straws matey.
And if anybody wants to argue the toss with the brake doctor further, before you scoot off to google some more crap, take a look at this link. From the fellas at Haynes, who probably have a reasonable idea of what they're talking about. Of course, I'm sure they're wrong too...
Lumpy - Right or wrong, you're a dick
Yes, it's a shame the thread degenerated into such a ridiculous state. The OP can't have found it much use.
So then, Lumpy, what is a KAFA?
Quote from: richfzs on 13 January 2012, 05:20:34 pmSo then, Lumpy, what is a KAFA?http://translate.google.com/#hr/en/kafaAnyway, shoul, or should I not put some copper grease on the spark plug threads?My copy of Haynes doesn't say to do so... but doesn't say not to do so either.